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SY88922

Micrel, Inc.

M9999-091906

hbwhelp@micrel.com or (408) 955-1690

DESCRIPTION

■ Up to 2.5Gbps operation

■ 25mA peak drive current

■ Separate modulation control

■ Separate output enable for laser safety

■ Differential inputs for data

■ Designed for use with SY88923, SY88904 or SY88905

■ Available in a tiny 10-pin (3mm) MSOP

The SY88922 is a high-speed current switch for driving

a semiconductor laser diode in optical transmission

applications. The output current, or modulation current

enable is HIGH.

The device incorporates complementary open collector

outputs with a capability of driving peak current of 25mA.

recommended to compensate for laser diode matching

issues.

The SY88922 utilizes the high performance bipolar

ASSET™ technology.

FEATURES

SDH/SONET 2.5Gbps

LASER DIODE DRIVER

BLOCK DIAGRAM

SY88922

■ 1.25Gbps Gigabit Ethernet

■ 531Mbps and 1062Mbps Fibre Channel

■ 622Mbps SONET

■ Gigabit Interface Converter

■ 2.5Gb/s SDH/SONET

APPLICATIONS

OUT

OUT

to Laser Diode

Modulation Control

Internal Logic

BIAS

Control

EN

40X

GND

GND

Rev.: D

Amendment: /0

Issue Date:

September 2006